// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef V8_PROFILER_TRACING_CPU_PROFILER_H_
#define V8_PROFILER_TRACING_CPU_PROFILER_H_

#include "include/v8-platform.h"
#include "src/base/atomic-utils.h"
#include "src/base/macros.h"
#include "src/base/platform/mutex.h"

namespace v8 {
namespace internal {

    class CpuProfiler;
    class Isolate;

    class TracingCpuProfilerImpl final
        : private v8::TracingController::TraceStateObserver {
    public:
        explicit TracingCpuProfilerImpl(Isolate*);
        ~TracingCpuProfilerImpl() override;

        // v8::TracingController::TraceStateObserver
        void OnTraceEnabled() final;
        void OnTraceDisabled() final;

    private:
        void StartProfiling();
        void StopProfiling();

        Isolate* isolate_;
        std::unique_ptr<CpuProfiler> profiler_;
        bool profiling_enabled_;
        base::Mutex mutex_;

        DISALLOW_COPY_AND_ASSIGN(TracingCpuProfilerImpl);
    };

} // namespace internal
} // namespace v8

#endif // V8_PROFILER_TRACING_CPU_PROFILER_H_
